161162167849 has 2 divisors, whose sum is σ = 161162167850. Its totient is φ = 161162167848.

The previous prime is 161162167847. The next prime is 161162167883. The reversal of 161162167849 is 948761261161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154710062224 + 6452105625 = 393332^2 + 80325^2 .

It is a cyclic number.

It is not a de Polignac number, because 161162167849 - 2¹ = 161162167847 is a prime.

Together with 161162167847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 161162167796 and 161162167805.

It is not a weakly prime, because it can be changed into another prime (161162167841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80581083924 + 80581083925.

It is an arithmetic number, because the mean of its divisors is an integer number (80581083925).

Almost surely, 2^161162167849 is an apocalyptic number.

It is an amenable number.

161162167849 is a deficient number, since it is larger than the sum of its proper divisors (1).

161162167849 is an equidigital number, since it uses as much as digits as its factorization.

161162167849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The spelling of 161162167849 in words is "one hundred sixty-one billion, one hundred sixty-two million, one hundred sixty-seven thousand, eight hundred forty-nine".